Sealing means for bags



Aug. '1 5, 1944'.

D. F. DREHER ETAL 2,355,786 sEALING MEANS FOR` BAGS Filed peo. .18, 1939 Patented Aug. 15

SEALING MEANS FOR BAGS Donald F.,

Dreher and Howard E. Lanzit, Los

Angeles, Calif., wignors of one-fourth to Wedworth W. Clarke and one-fourth to Raymond R. Lanzt Application December 18.1939, Serial No. 309,759

. 2 Claims. Our invention relates more particularly to means for hermetically sealing bags after mat ter has been placed 'therein and where it is de- 4sired to open said bags for removal of a portion of the contents and to again reseal it,'and to do this repeatedly without destruction of the bag or of the sealing means.

Such bags are used for candies, peanuts,'potato chips, cookies and other foods and confectionery, or articles or matter, which it is desired to keep fresh and dry and at the same time be able to open and reseal as may be desired.

Such bags are frequently made of light material and also of transparent material so that the contents ofthe bag-or container may be seen therethrough.

, In order to make sure that such bags or containers are ,really hermetically sealed, it is important that the sealing, means be strong, economical, convenient and practical, andl 'which will not, after being repeatedly opened, permit air .to find its way into said bag or container.

` It is also required that the sealing means have provision forprinting or advertising matter thereon and constitute a sort of cap or head for the bag or container by means of which it can be safely handled or suspended for display purposes. l

Our inventionhas among its objects to meet all of these requirements in a practical andelcient manner, and in order to more fully explain our invention, we have shown on the accompanying sheet of drawings, certainV embodiments thereof, which we'will now describe.

Figure 1 is a plan'view of a sealing member opened out before a bag is attached thereto, showing also the area coated by an adhesive;

Figure 2 is a similar view but showing the upper, open end of a bag placed down thereupon and partly overlying the adhesive area;

Figure 3 is anend view, looking down into the open end of the bag before it is closed and sealed; A

AFigure 4 is a view showing the cap or head member folded over uponv itself and upon the end of the bag, and showing a tab projecting upwardly therefrom, and. also showing vthe side wings folded back around the opposite sides as reinforcement;

Figure 5 is an enlarged sectionalview of the closed cap, taken on the line 5-5 of.y Fig. 4.;v

Figure 6 is a view similar to Fig. 2, showing a slightly modified4 form of the invention;

Figure 7 is an end view showing the bag mouthl folded over upon the open open and the cap member bowed slightly as' it would be in reaching into the bag;

Figure 8 is a view showing the cap member end of the bag and with the upper end of the bag also folded down upon itself, with the ends of said cap member folded back around the opposite sides of the bag, parts being broken away to show the different parts or portions.

Referring now more in detail to the drawing, and particularly to Figs. 1, 2, 3 and 4, the cap or sealing member is designated as a whole Il and is shown with an area provided with a pressure sensitive adhesive, Il, indicated by the fine and pressed upon the back of the member I0. as

dotted area, and also having side wings I0', Il 'and' a struck-out tab portion l2.

The bag is of light material, such a Cellophane, with its sides folded inwardly accordion-like., and designated as a whole I3 in said figures. This bag is placed down upon the area of adhesive as indicated in Fig. 2, and then the top, open end of the bag and said member I0, are folded down, at the fold linev I4, whereupon the upper portion of the adhesive coated member ili--i l, is pressed down upon the face of the bag, as indicated in Fig. 4, and the wing portions Ill', lil', are folded backwardly around the opposite sides of the bag will be understood from Fig. 4, where portions are broken away to show the folded relationship of the parts.

This constitutes a very strong Vsealing cap or member for the open end of a bag or container and the wing portions reinforce it while the tab portion projects upwardly for handling or even hanging the filled bag upon a suitable holding member, not shown.

Thus the top of the ba'g is folded down fiat-` wise upon itself, with the member' lo folded with and around it, the adhesive above the end of the bag, on said member i0, bearing upon the front of the bag at and below the folded top edges thereof and sealing upon the folded end of the bag, below the end proper of said bag as it is folded down upon itself. This surrounds the open end and opposite sides of the bag with adhered portions of the member Il.

Referring now to Figs. 6, 7 andB, this is a slightly simplified form` of the invention, on a bag not having its opposite sides provided with the accordion folds. The cap or sealing member l5 has wing portions I5', I5' to be folded, all fold lines being designated I8, and having the adhe sive coated area l1, upon ,which the bag Il is placed and pressed down thereupon, as indicated in Fig. 6, and as seen in Fig. 7 before it is folded.

In this form of the invention, the entire uncoated before described. The top, open end of the bag rests rst upon the coated area, as indicated in Fig. 6, and thenl when the top of the bag is folded over upon itself, together with the-member I5, the balance of the coated area bridges across the top edges or end of said bag, as folded upon itself, and adheres to the front of the bag at and below said end, thus hermetically sealing the bag,

which is reinforced as the wing portions I are folded around the opposite edges of the bag,`as clearly indicated in Fig. '8.

It will be understood that the adhesive used in all forms of the invention is known as a pressure sensitive adhesive which can be pressed together and will remain sealed, but thatit can be unsealed by taking an edge and rolling it back carefully and can be again resealed by simply pressing the parts together again. This can be accomplished repeatedly without destroying the adhesive. f.

We do not, however, limit our invention to the details of construction and arrangement shown for explanatory purposes, ex ited by the hereto appended claims.

We claim;

cept as we are liml. Sealing means for a bag including a cardlike member coated on one side with a pressure sensitive adhesive, a bag having its open end pressed flatwise down upon said member and saidl adhesive to adhere one side of said bag to s aid member with the end of-said side of said bag in al part of said adhesive, said member together with the open end of said bag being folded down upon the other side of said bag and adhered thereto, said member'having extensions at its opposite sides portions of which carry an adhesive coating arranged in alignment with the adhesive on said member, said extensions to lbe folded rearwardly around the opposite sides ofl said bag to effect hermetical sealing thereof.

2. Sealing means for a bag including a cardlike member coated on a portion oi one side with pressure sensitive adhesive, a bag of less width than said member having its open end pressed ilatwise down upon said member and said adhesive to adhere one side of said-bag to said member with the end of said side of said bag upon a part of said adhesive, said member together with theend of said bag being folded down upon the other side of said bag and adhered thereto by remaining parts of the adhesive coating, whereby the reverse uncoated side of said member is positioned in front of said bag, the opposite ends of said member being folded rearwardly around the opposite sides of said bag and adhered to the rear side by adhesive carried by said opposite endsto reinforce said sealing means.

DONALD F. DREHER. HOWARD E. LANZIT. 

